Coffees and colas are identified as to whether they contain the stimulant caffeine. The percent composition of caffeine is 49.5%

Question

Coffees and colas are identified as to whether they contain the stimulant caffeine. The percent composition of caffeine is 49.5% C, 5.20% H, 16.5% O, and 28.9% N. What is the molecular formula of caffeine if its molar mass is 194.1 g/mol?

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